Main: Add debug output for resolving server names

src/main.rs

@@ -83,11 +83,19 @@ async fn process_media(source: MediaSource, body: Option<String>, server: Option
     let media_id = uri.media_id()?;
 
     let client = match server {
-        Some(ref url) => Client::builder().server_name_or_homeserver_url(url),
+        Some(ref url) => {
+            debug!("Resolving server name or homeserver url '{url}' from command line");
+
+            Client::builder().server_name_or_homeserver_url(url)
+        },
         // NOTE: We know that server_name is not a URL at this point, however if resolving .well-known
         //       delegation fails falling back to interpreting the server name as the base URL is somewhat
         //       more resilient. Just had this now.
-        None => Client::builder().server_name_or_homeserver_url(server_name),
+        None => {
+            debug!("Resolving server name or homeserver url '{server_name}' mxc uri '{uri}'");
+
+            Client::builder().server_name_or_homeserver_url(server_name)
+        },
     }.build().await?;
 
     debug!("Downloading {} from {}", uri, client.homeserver());